Bobbin stripper



BOBBIN STRIPPER Filed NOV. 24, 1934 Patented Sept. 8, 1936 UNHTEDSTATESPATENT orties BOBBIN STRIPPER Edgar'Allen Terrell, Charlotte, N. C.,assignor .to The Terrell Machine Company, Charlotte, N. C., acorporation Application November .24, 1934, serial No. 754,667

' s claims. (c1. zzz- 19) The invention has relation to machines of thewhich is adapted tofbereciprocated on the `rbed of v class used in thetextile industry for the purpose the machine by mechanism not shown..Ania-butof stripping so-called feeler-waste, i. e., residues yment I isscrewed into the .race of the puller in of weft or filling, from bobbinsthat have been position to receive the thrust `,of thehead of Atheexpelled from the yworking shuttle of an autobobbin when it is moved aslight distance toward `5 matic weft-replenishing loom 'inbobbin-changing the puller-head by the vain-blast, hereinafterde-.operations brought about under the control .of 4a scribed. The,vforward end of this abutment is so-called weft or lling feeler. Moreparticu- T-shaped Vso -that when the bobbin is forced larly, it relatesto bobbin-stripping machines of against it, itwill not plug the thereofthe bobbin '10 the type having blades or the like 'by which Ithebutfwill leave `it suniclently open to permit .free 10 bunch of weft orlling remaining on an expelled passage of the cleaning blast of air. Theabutbobbin is removed from the bobbm-barrel 'by a ment VI'Elis-desirably in the formfof-ascrew tapped scraping action taking placelengthwise along the into the face of the bore so that it may'beadbobbin-barrel. justed toward and lfrom the usual bobbin sup- '15For an example of lthe type of bobbin-stripper ports in the machine; andvin order that the ad- T5 to which my present invention is applicable, 1justments of this Yabutment may be maintained, refer to my former PatentNo. 1,740,127, dated I provide a set screw Il tapped fup through a holeDecember A1'?, 1929, in which is used a puller-block irl thepuller-head. clamped t0 the unde'rseff carrying a pair of gripping jawsadapted to grip the puller-head is an angle bracket `12,.itsdepenrb thehead of the bobbin to draw or pull the same ing end being provided witha valve tappet I3 2U through the stripper-blades to remove the resiwhichis desirably in the form of ,a screw tapped due of weft or lling. Thespecial object of the into the bracket to enable the tappet to 'beadpresent invention is to provide this type of majusted toward 'and fromthe adjacent -end :of fa chine with an air-blast attachment which,'withvalve-rod I4. This valve-rod is mounted slidout interfering with ordelaying the usual strip.- ingly in a sleeve I5 aixed to a bracket :I5which l ping operation, will automatically blow out any is mounted on.the lmachine ramapreerably lint that may have accumulated in the iboreofthe means 0f a U-bOlt I'I. The .other .Lend of the bobbin to therebyclear the interior of the zbobbin valve-rod extends beyond the end ofthe .sleeve I5 of lint particles that might interfere with its and isprovided with a Cotter-pin I8 to prevent proper seating on the spindle,as more fully 'herethe valve-rod sliding out of `the sleeve. Adjacent 39inafter set forth. to this end of the valve-rod I4 is arranged a valveIn the drawing annexed, stem I9 which projects from the casing .of avalve Fig. l is a side elevation of a preferred form of 20 of the usualvalve-disk type. this VfllV@ being my apparatus, so much of the adjacent'parts of inserted in an inlet-pipe 2|.,which inlet pipe "and y theusual bobbin-stripper machine being shown Valve are rigidly aflixed tothe bracket .IIB by means '30 as is desirable in properly illustratingmy present .of U-bolts 22.

invention; Attached to the koutlet end of the inlet-pipe `2I Fig. 2 is alongitudinal sectional view of the is a piece `offlexilole tubing 23,andthe outlet lend n0zz1e devices; of this flexible tubing is aihxed to theinlet end of 40 Fig. 3 is a detail view partly in section of a thenozzle-pipe 24, which nozzle-pipe is supported im bracket for actuatinga valve rod; and rigidly on bracket I6. The outlet end of this pipe Fig.4 is a detail plan View of the puller-head 0r 24 delivers air to theinterior of the aforesaid airblo'ck. cylinder at its rear end, and inorder that this pipe Referring to the drawing 'by reference cha-r- 24andthe air-cylinder 5 may be longitudinally 4D acters, 5 designates anair-cylinder `mounted on adjusted with reference to the puller-head l'to4" the usual frame of the bobbing-stripper in horizonaccommodate'bobbins of diiierent lengths, I protal alinement with the bobbinsupports in the vide `for adjusting the pipe 24 in the V:bracket bymachine and positioned close to the point where means 0f a Set-Screw 25-Within the air-Cylthe tip of the bobbin will lie when it is positionedndel 5,1 mOunt a long, Sldable piston-like nozzle v in the machine readyfor stripping, said cylinder 25, which desirably has a nice t, but notneces- D0 being provided with a lip extension 6 adapted to Sarly anair-tight fit, in the interior 0f the Cylreceive and support the tip endof the bobbin 1 inder. This piston-nozzle is provided with a cenwhen itis in position for stripping. When thus tral bore 26 extendingthroughout its length placed, the bobbin will lie in position to begrasped having a cross-sectional area less than the area F by the usualjaws 8 carried by the usual puller 9, of the pressure-end of the piston.This piston is 0D moved toward the bobbin 1 by means of the airblast andafter the air-blast has completed its work the piston is returned to itsnormal position against seat 21 by means of a retractile spring 28connecting two pins 29 and 30, the former of which is mounted on thecylinder at the rear end thereof and the other of which is tapped intothe wall of the piston through a. slot 3| formed in the bottom-side ofthe cylinder. The forward end of the piston is desirably cupped tothereby provide a beveled or rounded seat 32 for proper engagement withthe tip of the bobbin when the piston is projected forwardly by theair-blast, when the blast is turned on to clean the bore of the bobbin.

'I'he parts may be so adjusted that when the puller-head has beenadvanced to a point where it is about to grasp the head of the bobbin,the tappet I3 will strike the valve-rod I4 and thus open the valve 20.Thereupon a blast of air, from a source not shown, will enter the rearend of the cylinder and quickly force the piston 26 forwardly intoengagement with the tip of the bobbin, and then the air-blast will havea clear path through the bore of the bobbin to clean the lint therefrom.As heretofore stated, the pressure area of the-piston at its rear end isgreater than the area of the nozzle-passage 26' so that notwithstandingthe fact that the air has clear passage through the pistonjthe pistonwill be quickly advanced into contact with the tip of the bobbin. As thegrippers pull the bobbin away from the nozzle, the nozzle will followthe bobbin until stop-pin 30 reaches the forward end of the slot 3|,whereupon the piston will stop and the air will be exhausted out throughthe bore in the piston. Then when the air-pressure is thus removed, thespring 28 will quickly return the piston to its position against seat21, ready for the next operation.

In accordance with the provisions of the patent statutes, I have hereindescribed the principle of operation of my invention, together with theapparatus which I now consider to represent the best embodimentsthereof, but I desire to have it understood that the apparatus disclosedis only illustrative and that the invention can be carried out by othermeans.

I claim:

1. In combination with a bobbin-stripping machine, having devices forexternally stripping a bobbin while in stripping position, an apparatusfor subjecting the bore of the bobbin to an airblast while the bobbin isin stripping position, embodying an air-cylinder, a nozzle slidablymounted therein adapted to be moved into contact with the tip of thebobbin during a stripping operation, said nozzle having an air-passage,and timed means for delivering a blast of air into said cylinder againstthe pressure head of the nozzle to thus move the nozzle into engagementwith the tip of the bobbin and subject the interior of the bobbin to thesame blast of air.

2. The structure recited in claim 1, said airpassage extendingthroughout its length of the nozzle.

3. The structure recited in claim 1, the crosssectional area of saidair-passage through the bobbin being less than the pressure-area of thepressure-end of the nozzle to thereby insure the advance of the nozzleinto operative position and at the same time permit the same blast ofair to pass through the air-passage of the nozzle.

4. 'Ihe structure recited in claim 1, said apparatus embodying avalve-tappet mounted on a movable part of the bobbin-stripping machine,a valve-rod adapted to be actuated by said tappet, an inlet-pipecarrying a stationary valve adapted to be operated by said valve-rod,and conduit means connecting the outlet end of said inlet-pipe with theinlet end of the cylinder.

5. The structure recited in claim 1, said apparatus embodying aninlet-pipe provided with a valve, a flexible conduit connection betweenthe outlet-end of said inlet-pipe and one end of a pipe connected at itsother end to the inlet-end of the cylinder, and means for adjustablysupporting this latter pipe, and timed devices for actuating said valve.

6. In combination with a bobbin-stripping machine, an apparatus forsubjecting the bore of the bobbin to an air-blast while the bobbin is instripping position, embodying a stationary air-cylinder, a nozzleslidably mounted therein adapted to be moved into contact with the tipof the bobbin during a stripping operation, and means actuated from apart of the bobbin-stripping machine for delivering a blast of air intosaid cylinder to thus move the nozzle into engagement with the tip ofthe bobbin and by the same blast of air subject the bore to a cleaningaction.

7. In combination with a bobbin-stripping machine, an apparatus forsubjecting the bore of the bobbin to an air-blast when the bobbin is instripping position, embodying a nozzle adapted to engage the tip of thebobbin while in stripping position to discharge an air-blast into thebore of the bobbin, and air-blast means for moving said nozzle intooperative position and holding it there while the same blast of airenters the bore of the bobbin to subject the same to a cleaning action.

8. In combination with a bobbin-stripping machine of the puller-headtype having devices for externally stripping a bobbin while in strippingposition, an apparatus for subjecting the bore of the bobbin to anair-blast while the bobbin is in stripping position, embodying astationary aircylinder, a nozzle slidably mounted therein adapted to bemoved into Contact with the tip of the bobbin during a strippingoperation, said nozzle having an air-passage and timed means fordelivering a blast of air into said cylinder against the pressure headof the nozzle to thus move the nozzle into engagement with the tip ofthe bobbin and subject the interior of the bobbin to the same blast ofair, said apparatus embodying also a valve-tappet mounted on thepullerhead of the bobbin-stripping machine, a valverod adapted to beactuated by said tappet when the puller-head is in position to grasp thebobbin, a stationary valve adapted to be operated by said valve-rod, andconduit means connecting said valve with the inlet-end of said cylinder.

EDGAR ALLEN TERRELL.

